Description & Operation

WARNING: This page is about a different car, the 2003 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: Accidental air bag deployment is possible. Personal injury may result. Read and follow all WARNINGS and AIR BAG SAFETY PRECAUTIONS before working on air bag system or related components.

Supplemental Inflatable Restraint (SIR) system is designed to supplement protection provided by driver-side and passenger-side seat belts. A frontal collision of sufficient force will deploy driver-side and passenger-side air bag modules. A side collision of sufficient force will deploy head impact (side curtain) air bag module on side of impact. Steering column and knee bolsters also absorb collision energy. SDM maintains a 23 Volt Loop Reserve (23 VLR) energy supply to provide deployment energy if battery voltage is lost during impact.

SIR system consists of Sensing and Diagnostic Module (SDM), driver-side and passenger-side air bag modules, head impact air bag modules, Side Impact Sensors (SIS), SIR coil assembly and AIR BAG warning light.